From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Development of a revised engine with different cylinder block configurations.
| Identifier | ExFiles\Box 14\3\ Scan002 | |
| Date | 24th May 1927 | |
| To Hs.{Lord Ernest Hives - Chair} from E.{Mr Elliott - Chief Engineer} c. to BY.{R.W. Bailey - Chief Engineer} X7050 RE. EAC. 7. X. 7770 X. 790 X. 7050 E1/M24.5.27. We are pushing on with a revised engine having a 9" high crankchamber, and cyl. blocks fitted with dry liners, as it is not thought worthwhile to standardise EAC.7. engine in its present form. This engine can also be tried with alternative cyl. blocks having wet liners, using the same crankchamber, cyl. head and valve gear. We should like to know what compression ratio is now in use on EAC.7., and if this is considered satisfactory. E.{Mr Elliott - Chief Engineer} | ||